KT

Keiji Takamatsu

SC Sumitomo Metal Mining Co.: 1 patents #4 of 15Top 30%
Overall (1989): #22,261 of 140,708Top 20%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4882491 Infrared detector Yukitoshi Tamura 1989-11-21
4825079 Pyroelectric infrared detector Hideki Takahashi 1989-04-25